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 Linear-systems/666696: if you wanted to make the graph y=6x+7 less steep which equation could you use multiple choice: A)y=10x+7 B)y=6x+4 C)y=-6x+7 D)y=2x+71 solutions Answer 414634 by solver91311(17077)   on 2012-10-15 13:40:37 (Show Source): You can put this solution on YOUR website! The one with the smaller absolute value of the coefficient on John My calculator said it, I believe it, that settles it
 Linear_Equations_And_Systems_Word_Problems/666693: Bob is six years older than Jane who is half as old as Jack. Express each of their ages in terms of a single unknown. please express in terms of algebraic symbols...1 solutions Answer 414630 by solver91311(17077)   on 2012-10-15 13:20:09 (Show Source): You can put this solution on YOUR website! Let Jane's age be represented by , then Jack is and Bob is or Let Bob's age be represented by , then Jane is and Jack is or Let Jack's age be represented by , then Jane is and Bob is John My calculator said it, I believe it, that settles it
 Rate-of-work-word-problems/666681: Mutt and Jeff need to paint a fence. Mutt can do the job alone 6 hours faster than Jeff. If together they work for 10 hours and finish only 4/5 of the job, how long would Jeff need to do the job alone? 1 solutions Answer 414627 by solver91311(17077)   on 2012-10-15 13:13:27 (Show Source): You can put this solution on YOUR website! If it takes 10 hours for the pair to complete of the job, then it takes hours to complete the whole job, and therefore the pair working together can complete of the job in 1 hour. Let represent the time it takes Jeff to do the whole job. Then is the time it takes Mutt to do the whole job. Then Jeff can do of the job in one hour and Mutt can do of the job in one hour. Now we can say that: Solve for . Once you have it reduced to a quadratic in standard form, it will not factor. Use the quadratic formula. One of the roots will be less than 6, so discard that answer -- Mutt can't paint the fence in negative time, can he? John My calculator said it, I believe it, that settles it
 Numeric_Fractions/666687: what is 7 3/8 - 2/241 solutions Answer 414618 by solver91311(17077)   on 2012-10-15 12:38:37 (Show Source): You can put this solution on YOUR website! It is an expression describing the difference of a mixed number and a proper fraction. John My calculator said it, I believe it, that settles it
 Age_Word_Problems/666682: 1. Ann is now seven times as old as Joan. In six years, Ann will be five times as old as Joan. Find the present age of each one. Joan's age? Ann's age?1 solutions Answer 414616 by solver91311(17077)   on 2012-10-15 12:37:00 (Show Source): You can put this solution on YOUR website! Let represent Joan's age. Then represents Ann's age. In 6 years, Joan will be and Ann will be . We are given that: Solve for , then calculate . To check your work, calculate which should be equal to John My calculator said it, I believe it, that settles it
 Permutations/666676: Please help! Evaluate the expression 12! using a calculator. --- 8! Please explain how to do this! 1 solutions Answer 414612 by solver91311(17077)   on 2012-10-15 12:28:13 (Show Source): You can put this solution on YOUR website! The first thing to do is to simplify the expression. Note that , so . You should be able to take it from there on your calculator. John My calculator said it, I believe it, that settles it
 test/665892: I'm in 5th yr and I find aljebra so hard 1 solutions Answer 414149 by solver91311(17077)   on 2012-10-13 17:44:29 (Show Source): You can put this solution on YOUR website! Step 1: Learn to spell algebra correctly. Step 2: Learn to read and follow instructions. Step 3: Compare the example of a bad question given along with the instructions posted on this site and note the similarity to your question. Note the complete lack of similarity between your complete waste of our time and the example of a good question. John My calculator said it, I believe it, that settles it
 Probability-and-statistics/665849: Here is the question: A survey asked 5851 random adults the question "How many children have you ever had?" Use the results shown below to answer the following questions. # of children 0 1 2 3 4 5 7 8 N 1509 929 1235 866 595 371 99 44 Can you please figure this out for me and tell me how to do it step-by-step and in very simple terms. Thank you.1 solutions Answer 414137 by solver91311(17077)   on 2012-10-13 16:29:28 (Show Source): You can put this solution on YOUR website! You presented the data, but not the questions. This is algebra.com, not the Psychic Hot Line. Repost. Follow instructions. One question per post. John My calculator said it, I believe it, that settles it
 Linear_Equations_And_Systems_Word_Problems/665865: if a pound of hamburger meat cost 30 cents then how much does 1\3 of a pound cost ? 1 solutions Answer 414136 by solver91311(17077)   on 2012-10-13 16:22:13 (Show Source): You can put this solution on YOUR website! Divide by 3 John My calculator said it, I believe it, that settles it
 Money_Word_Problems/665867: starting wage 35,000 raise 3,000 total salary over ten years 1 solutions Answer 414135 by solver91311(17077)   on 2012-10-13 16:16:42 (Show Source): You can put this solution on YOUR website! So what's your question? Learn to read instructions and follow them and you will have lots less difficulty with Math. John My calculator said it, I believe it, that settles it
 Geometry_proofs/665856: if triangle ABC is congruent to ACD then what is the postalute?1 solutions Answer 414134 by solver91311(17077)   on 2012-10-13 16:09:08 (Show Source): You can put this solution on YOUR website! Sorry, you have to present the COMPLETE problem, with a diagram or at least a COMPLETELY unambiguous description of the diagram. As it stands, your question makes no sense whatsoever. John My calculator said it, I believe it, that settles it
 Quadratic_Equations/665862: When the quadratic equation y = (x − 2)(3x + 1) is written in standard form, what is the value of the coefficient "b"? −5 3 −2 51 solutions Answer 414129 by solver91311(17077)   on 2012-10-13 15:54:30 (Show Source): You can put this solution on YOUR website! Use FOIL to multiply the two binomials. John My calculator said it, I believe it, that settles it
 Angles/665593: Two angles are complementary one angle is four times the other angle 1 solutions Answer 413941 by solver91311(17077)   on 2012-10-12 16:22:26 (Show Source): You can put this solution on YOUR website! Fascinating. So what is your question? John My calculator said it, I believe it, that settles it
 Average/665576: how many questions did i miss if i got a 93 out of 7 questions?1 solutions Answer 413935 by solver91311(17077)   on 2012-10-12 15:48:09 (Show Source): You can put this solution on YOUR website! Divide 7 by 0.93. About one-half question. John My calculator said it, I believe it, that settles it
 Triangles/664817: Havvin proved that triangle RST is congruent to triangle XYZ by the reason SSS, what reason allows you to conclude that angle S is congruent to angle Y? You may edit the question. Maybe convert formulae to the same formula notation as in your solutions.1 solutions Answer 413449 by solver91311(17077)   on 2012-10-10 22:39:32 (Show Source): You can put this solution on YOUR website! CPCT John My calculator said it, I believe it, that settles it
 Triangles/664811: In triangleABC, rayAB is congruent to rayBC. If m< A=37 degrees, find m1 solutions Answer 413445 by solver91311(17077)   on 2012-10-10 22:35:42 (Show Source): You can put this solution on YOUR website! If AB congruent to BC, then angle C (the angle opposite AB) has to be congruent to angle A (the angle opposite BC). So both A and C measure 37 degrees. So B has to measure 180 - (37 + 37) since the sum of the angles of any triangle is 180 degrees. John My calculator said it, I believe it, that settles it
 Triangles/664792: I'm just going to start with I'm horrible at geometry... I like algebra and understand it, but I just can't wrap my brain around geometry.. So THANK YOU for helping me! In triangle ABC, m < C=90 degrees. If AC=6 and BC=8, find AB1 solutions Answer 413443 by solver91311(17077)   on 2012-10-10 22:27:39 (Show Source): You can put this solution on YOUR website! If angle C measures 90 degrees, then angle C is a right angle by definition and triangle ABC is a right triangle by definition. AC and BC, since they have endpoints at the right angle vertex, must be the legs of the triangle. Use Pythagoras: where and are the measures of BC and AC (doesn't matter which, it all comes out in the wash. Though by convention, the designations would be in the order given) Or just note that this is a 3-4-5 right triangle and the measure of the hypotenuse has to be 10. Finally, cut the whiney, "woe is me, I can't understand (whatever)" nonsense. It is an annoying waste of tutors' valuable time to wade through that bunch of BS just to get to your question. Spend your time more wisely by explaining what you have tried on your own to answer the question so that we have a better idea of what you actually need. And for pity's sake, do NOT write back and apologize -- I don't want to hear that either. John My calculator said it, I believe it, that settles it
 Trigonometry-basics/664592: What is the maximum volume of a open box created from a square of side length 24? Keep in mind that V=LWH. So for this problem the dimensions are as follows: L = 24-2x, W = 24-2x and H = x. The maximum volume will be where the volume equation is the greatest. You are to determine: 1. The volume equation. 2. The maximum volume. 3. The value of x that maximizes the volume. Explain each step.1 solutions Answer 413373 by solver91311(17077)   on 2012-10-10 18:25:02 (Show Source): You can put this solution on YOUR website! Multiply length times width times height: So Take the first derivative (Power and Sum Rules) Set the first derivative equal to zero and solve. This is a quadratic so you will get two roots, each of which represents the abscissa of a local extremum of the original function. Take the second derivative: Evaluate where is either of the abscissas of the possible extreme points. If then is the abscissa of a local maximum, if then is the abscissa of a local minimum. If , the second derivative test is inconclusive, but it is a possible inflection point. In the latter case, for this problem, calculate the volume for the value of in question and see if it makes sense as a possible value that could give a maximum volume. John My calculator said it, I believe it, that settles it
 Expressions-with-variables/664587: y=mx+b please help me because im lost.1 solutions Answer 413367 by solver91311(17077)   on 2012-10-10 18:03:48 (Show Source): You can put this solution on YOUR website! Can't help you unless you ask a question. John My calculator said it, I believe it, that settles it
 Linear_Algebra/664577: The problem is slope -3; (-1,4. How do I write the equation in standard form (Ax+By=C)?1 solutions Answer 413365 by solver91311(17077)   on 2012-10-10 18:02:25 (Show Source): You can put this solution on YOUR website! Use the point-slope form of an equation of a line: where are the coordinates of the given point and is the given slope. Then use normal algebraic procedures, i.e. adding equal quantities to both sides and multiplying both sides by equal quantities to arrange the equation into standard form. Note: some authors demand that the coefficients in an equation in standard form be integers, other authors have no such restriction on their definition. Check with your teacher/professor/instructor and text book as to the exact definition of Standard Form. John My calculator said it, I believe it, that settles it
 test/664571: I need help with linear equation1 solutions Answer 413362 by solver91311(17077)   on 2012-10-10 17:55:01 (Show Source): You can put this solution on YOUR website! You need help reading, understanding, and following instructions, especially those instructions regarding posting questions on this site. Please take a moment to compare your question to the example given of a bad question and notice all of the similarities. Then compare your question to the example of a good question and note the lack of any similarity whatsoever. John My calculator said it, I believe it, that settles it
 Linear_Equations_And_Systems_Word_Problems/664574: Which equation can be used to find h, the number of hours in d days 1 solutions Answer 413360 by solver91311(17077)   on 2012-10-10 17:50:54 (Show Source): You can put this solution on YOUR website! Hint: Each day has 24 hours in it. John My calculator said it, I believe it, that settles it
 test/664575: Reflect over the y axis (A) (-5,-2) (b) (-2,-2) (c) (-5,-6)1 solutions Answer 413359 by solver91311(17077)   on 2012-10-10 17:50:05 (Show Source): You can put this solution on YOUR website! Change the sign on the coordinate in each case. John My calculator said it, I believe it, that settles it
 percentage/664569: 22 is 74% of... How do I calculate mentally? Thank you! 1 solutions Answer 413358 by solver91311(17077)   on 2012-10-10 17:48:36 (Show Source): You can put this solution on YOUR website! 22 is 74% of ... 74% is almost 75%. 75% is 3/4. So if 22 is 3/4 of something, then 1/4 of that something is 1/3 of 22 which is roughly 7. 4 times 7 is 28, but since both of the estimates used were on the low side (74% is less than 3/4 and 7 is less than 1/3 of 22), add one. 29 is pretty close. John My calculator said it, I believe it, that settles it
 Linear-equations/664563: I have no clue how to solve this Graph the line that satisfies each set of conditions passes through(0,1), perpendicular to a line whose slope is 1/31 solutions Answer 413357 by solver91311(17077)   on 2012-10-10 17:41:49 (Show Source): You can put this solution on YOUR website! Perpendicular lines have negative reciprocal slopes. Take the negative reciprocal of the given slope to obtain the slope of the desired line, then use the point-slope form of an equation of a line: where are the coordinates of the given point and is the calculated slope. John My calculator said it, I believe it, that settles it
 Coordinate-system/664015: write the standard form equation. 1. r = 5 c(0,0) 1 solutions Answer 413088 by solver91311(17077)   on 2012-10-09 18:58:29 (Show Source): You can put this solution on YOUR website! which is to say: John My calculator said it, I believe it, that settles it
 Quadratic_Equations/663981: Write the quadratic function (f) in the form of f(x). We are working on this formula if this helps. f(x) = a(x-h)squared + k 1. f(x) = 2x squared + 6x + 5 2. f(x) = 2x squared - 4x 3. f(x) = -4x squared + 4x - 1 4. f(x) = 1/2x squared + 2x + 4 5. f(x) = 3x squared + 12x +141 solutions Answer 413086 by solver91311(17077)   on 2012-10-09 18:56:41 (Show Source): You can put this solution on YOUR website! Could be any of them depending on the specific values of a, h, and k. You gotta share the WHOLE problem on Algebra.com. Sometimes you can get away with leaving out details if you call the Psychic Hot Line... John My calculator said it, I believe it, that settles it
 Travel_Word_Problems/663992: how do you find the rate in miles per hour. 1 mi in 3 min 1 solutions Answer 413083 by solver91311(17077)   on 2012-10-09 18:41:20 (Show Source): You can put this solution on YOUR website! 1 mile in 3 minutes is 1/3 mile per minute. 1/3 mile per minute times 60 minutes per hour equals = ?? miles per hour. John My calculator said it, I believe it, that settles it
 Money_Word_Problems/663987: one number is eight less than another number.The sum of the two number is 50.Find the smaller all i need is setting up the equation 1 solutions Answer 413082 by solver91311(17077)   on 2012-10-09 18:37:30 (Show Source): You can put this solution on YOUR website! Let represent the smaller number, which is 8 less than the larger number which must then be . John My calculator said it, I believe it, that settles it
 Pythagorean-theorem/663980: How do you solve this... Hal is standing 40ft away from a 36ft tree. If the distance from the top of the tree to the top of Hal's head is 50ft, how tall is Hal? Thanks!!1 solutions Answer 413079 by solver91311(17077)   on 2012-10-09 18:34:32 (Show Source): You can put this solution on YOUR website! 6 ft. The line from the top of Hal's head to a point Hal's height above the ground on the tree, the line from that point to the top of the tree, and the line from the top of the tree to Hal's head form a right triangle. The measure of one leg is 40 feet and the measure of the hypotenuse is 50 feet, so the measure of the other leg must be 30 feet (3-4-5 right triangle). The part of the tree from Hal's height up then measures 30 feet, but the tree is 36 feet tall, so Hal must be 36 minus 30 equals 6 feet tall. John My calculator said it, I believe it, that settles it